-??Service Trailer Brake System-?? indicator light and alert continue happening. As of this weekend, my rear driver side taillight has begun going in and out/off and on.

- Brooks, GA, USA

I was driving down the highway and out of no where I hear this loud kaboom! I ducked thinking something just hit me and pull over but here glass tinkling around. I automatically know it is my sunroof so I get out and look and my sunroof exploded. (Looked like it was pushed up.) Luckily I had the inside part shut or I and my passenger would have been covered in glass.

- Tyndall, SD, USA

THE TRAILER BRAKE SYSTEM DISPLAYS ON DASH EVERY 10 SECONDS, KEEPS ON DINGING LOUD AND WILL NOT CLEAR WHILE IM DRIVING.. IT JUST STARTED OUT OF KNOWHERE AND I NEVER USED THE TRAILER SYSTEM OR TOWED ANYTHING SINCED I PURCHASED THIS TRUCK. I SAW SEVERAL COMPLAINTS ON THIS SAME ISSUE/PROMBLEM. i JUST SPENT NEARLY $800 ON FRONT BRAKES AND ROTORS. I SHOULDN'T HAVE TO COME OUT OF POCKET TO GET THIS RESOLVED. GM NEEDS TO FIX THIS PROBLEM!!! LIKE I MENTION, I NEVER USED THE TRAILER SYSTEM AT ALL AND NEVER WILL. I DRIVE A 2015 YUKON DENALI SUV, BEEN HAVING PROBLEM ALSO WITH THE JERKING OF THE VEHICLE WHEN ITS PUT IN DRIVE. THE DEALER SAYS THAT THIS IS NORMAL, SOAGAIN SOMETHINGS NOT RIGHT.

- St. Louis, MO, USA

I was driving my 2015 GMC Yukon a light illuminated on the dashboard. I pulled over at a Convenience store. Got my children out of the car. Once out of the vehicle I noticed smoke. Within the matter of 2 mins the truck was engulfed in flames.

- Detroit, MI, USA

Air conditioning stopped working.

- Douglas , AZ, USA

At certain speeds my vehicle vibrates, like a grinding sound at speeds between 50-55. This is a safety risk because I have children and grandchild that frequently ride with me. I have taken my vehicle back to the dealership and they say it is no codes and send it back to me without fixing the problem. My vehicle has not been inspected by anyone except the GM dealership. I got my vehicle Nov. 2018 and this started happening between Dec. 2018 and Jan. 2019. My check engine light did appear and was flashing around this time. In 2019 I had to replace the rear shocks and I believe they are not working properly now.

- Washington, NC, USA

Purchased a 2015 Yukon denali back in November 2019. Since purchasing the vehicle we have had to replace the battery, transmission, ac compressor and expansion valve (which still isn't working correctly, because it doesn't blow cold air), and the black panels that are in between the windows. Also, both tail lights have decided to quit working.... which concerns me greatly because cars behind me don't know when I am stopped or applying the breaks. Stopped or have my foot on the break.

- Chapin, SC, USA

Onstart not working properly. Cannot access gps and/or certain functions in the GMC application due to no antenna signal being obtained through intellilink system. Onstar mirror has a red light and gps has a cross hatch through it. We have activated onstar profile and subscription. I know their has been a recall on this antenna in the past but we just purchased the vehicle.

- Derby, KS, USA

While driving approximately 60 mph on a deserted flat stretch of road surrounded by farmland, my sunroof suddenly exploded. The screen was open to provide light but the glass was shut. No other cars were nearby nor were any hills where a rock could fly from. It was just sudden. It sounded like a loud explosion and suddenly glass was flying all over the car. Fortunately, I didn't crash the car. Myself and my son who was in the passenger seat, we were both covered in glass.

- Missoula, MT, USA

The led brake lights on my passenger side are malfunctioning and it seems to be a common theme for Yukon owners. I have called 5 different dealerships and they are all out of this part because it keeps failing

- Dallas, TX, USA

A few days ago I got out of my truck to retrieve a package left at my garage door. I put my vehicle in park walked around my car door walked by the front of my truck to retrieve the package and all the sudden I was knocked down. I did not realize what happened until I looked up and saw my truck driving towards me. I scream for help as I crawled backwards to safety. A few minutes later I realize the truck was no longer moving and by the grace of god my wheels were turned slightly and it had stopped because it hit the side of my house. It took a couple of days for the shock to wear off of what could have happened to me or my kids if they were playing outside. My husband and I spoke to a couple of people including a certified mechanic and we found out that this has happened before on the 2015 Yukon. I am attaching pictures of what we found from GMC along with my truck.

- Mohnton, PA, USA

After no apparent impacts or external damage, three different lights have failed or become endangered by wetness. First a tail light assembly had to be replaced for $827, then the 3rd brake light for $280, and now there is wetness visible inside a headlight (costing something like $900 to replace).

- Chicago, IL, USA

My air conditioner is out! in the middle of summer in Georgia! I had it diagnosed from someone I trust and from the dealer, both said its a crack which causes the refrigerant to leak and lose pressure. There has been exactly zero damage or any foreign object that caused this. We know it is a defective part that GM uses. Also, my rear passenger tail light is out and has to be replaced to the tune of about $600. This too is a common problem with these vehicles that is due to a defective part that GM uses. I have 2 friends with the same year model vehicle and they both have had this problem. Again, no outside influence such as damage or foreign object has caused this. I bought an extended warranty when I purchased the car. I called to have the repair for A/C covered but my warranty was out (had run out 600 miles before I called!) and 2 seperate representatives told me they have about 2-3 claims per week on this specific A/C problem with GM vehicles.

- Pine Mtn Vly, GA, USA

Brake light is will not working on passenger side

- Nashville, GA, USA

Tail light keep going off, dealer wont fix it under warranty, they $700 when its a manufacture issue, something wrong that keep burning the led lights.

- Dearborn, MI, USA

My vehicle has a crack in the combi-cooler as described in nhsta reference number: N162080780 and GM special coverage adjustment 17336. In the documentation for the special coverage it states that the coverage period is 5 years of 60,000 miles based on the date the vehicle entered service. This vehicle was a GM executive vehicle until purchased with 15102 miles via the GM pep program. GM is not including my vehicle even though it is clearly stated in the coverage since their systems do not account for a vehicle that enters service with this many miles. I believe this is a violation of their agreement with NHTSA and request that NHTSA investigate the total number of air conditioning condenser unit failures used in such vehicles to identify if a full fledged recall is warranted.

- Oakland Township, MI, USA

My lift gate failed to close while at grocery store. It was stuck in raised /open position. Could not close manually. I had to drive home and to GMC service center w/ lift gate raised. There is a GMC recall bulletin on file14300A but my vehicle VIN # is not tagged, inoperable lift gate. I was advised by service manager, my lift gate motor had to be replaced. This is my 3rd Chevy/GMC SUV and my first two Suburban had over 250K miles and never had an issue w/ my lift gate. My Yukon has only 114K miles, well taken care of and the lift gate fails me. The existing recall should apply to my repairs, estimate cost $700.

- Powder Springs, GA, USA

Rear tail lamp at brake light work intermittently. It is known that the circuitry connecting the leds break.

- Texarkana, AR, USA

The air conditioning has failed in both of the Yukon's we own so we decided to take one of them to a friends body shop who discovered that the condenser design is assembled to the vehicle frame with the pipe entering the condenser in completely rigid state meaning that when there is flex to the vehicle frame the pipe does not move and thus cracks overtime from the condenser, making the condenser leak and rendering the air conditioning useless. We were traveling in South Carolina with a 11 month old, a 2 year old and a ten year old. We pulled over so my boyfriend could run into a piggly wiggly to grab some groceries and I stayed in the car with the kids. The air was running and within minutes the car suddenly became very warm and uncomfortable and I immediately checked the ac and it was running but no cold air was coming out. In fact the car was becoming like a sauna. Our kids get very car sick. Before I could get all three of the out of the car the 2 year old had already vomited. Needless to say the rest of the trip was absolutely horrible to go anywhere by car and the drive home was miserable with a puking 2 year old as we had to drive with the windows down for fresh air but it was steamy and uncomfortable. When people think of safety issues they normally think of brakes, engines, etc while driving. When your ac goes out and you have very young children that you normally would not put in that situation such as a new born it presents a safety issue and should be addressed by GM. The current air conditioning system has a 100% failure rate before 100K miles and in some cases much sooner than that. Both of our vehicles had it happen before 60K miles. The reason GM wont get behind it is the labor cost to fix it. You have to remove the entire front end, the lights and the front frame in order to get to the condenser. Poor design for service.

- Waterford, MI, USA

The ac condenser stopped working. This is the second time it has been replaced. First under warranty, second is not. It is funny how every person at dealership service department knows the condenser is a faulty product, bit GMC won't recall. Even non GMC repair shops know this.

- Dallas, GA, USA